Hi, basically i'm getting a grinding noise when i brake and intermittently when just plodding along i'm pretty sure it's the rear brakes as i pulled the handbrake up slightly and the noise went away, does any1 have any ideas of wat it could be i have no knowledge of the rear brake assembly but would really just want an idea of the problem and a 'worst case scenario' of the costs i'm likely to pay to have sorted. thanks in advance.